GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdlib/getsubopt.c Lines: 0 23 0.0 %
Date: 2017-11-13 Branches: 0 50 0.0 %

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/*	$OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $	*/
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/*-
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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/*
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 * The SVID interface to getsubopt provides no way of figuring out which
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 * part of the suboptions list wasn't matched.  This makes error messages
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 * tricky...  The extern variable suboptarg is a pointer to the token
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 * which didn't match.
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 */
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char *suboptarg;
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int
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getsubopt(char **optionp, char * const *tokens, char **valuep)
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{
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	int cnt;
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	char *p;
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	suboptarg = *valuep = NULL;
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	if (!optionp || !*optionp)
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		return(-1);
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	/* skip leading white-space, commas */
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	for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
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	if (!*p) {
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		*optionp = p;
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		return(-1);
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	}
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	/* save the start of the token, and skip the rest of the token. */
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	for (suboptarg = p;
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	    *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
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	if (*p) {
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		/*
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		 * If there's an equals sign, set the value pointer, and
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		 * skip over the value part of the token.  Terminate the
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		 * token.
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		 */
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		if (*p == '=') {
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			*p = '\0';
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			for (*valuep = ++p;
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			    *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
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			if (*p)
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				*p++ = '\0';
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		} else
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			*p++ = '\0';
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		/* Skip any whitespace or commas after this token. */
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		for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
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	}
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	/* set optionp for next round. */
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	*optionp = p;
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	for (cnt = 0; *tokens; ++tokens, ++cnt)
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		if (!strcmp(suboptarg, *tokens))
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			return(cnt);
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	return(-1);
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}